EP2631188A1 - Falteinheit für Maschinen zur Verpackung gießbarer Lebensmittel - Google Patents

Falteinheit für Maschinen zur Verpackung gießbarer Lebensmittel Download PDF

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Publication number
EP2631188A1
EP2631188A1 EP12157008.9A EP12157008A EP2631188A1 EP 2631188 A1 EP2631188 A1 EP 2631188A1 EP 12157008 A EP12157008 A EP 12157008A EP 2631188 A1 EP2631188 A1 EP 2631188A1
Authority
EP
European Patent Office
Prior art keywords
link
along
relative
slide
slot
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12157008.9A
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English (en)
French (fr)
Other versions
EP2631188B1 (de
Inventor
Andrea Catellani
Richard John Pedretti
Massimo Pradelli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tetra Laval Holdings and Finance SA
Original Assignee
Tetra Laval Holdings and Finance SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to EP12157008.9A priority Critical patent/EP2631188B1/de
Application filed by Tetra Laval Holdings and Finance SA filed Critical Tetra Laval Holdings and Finance SA
Priority to ES12157008.9T priority patent/ES2503616T3/es
Priority to JP2014558067A priority patent/JP6143017B2/ja
Priority to BR112014018112A priority patent/BR112014018112A8/pt
Priority to MX2014008989A priority patent/MX353517B/es
Priority to KR1020147026075A priority patent/KR101888723B1/ko
Priority to RU2014138510A priority patent/RU2617339C2/ru
Priority to CN201380010624.5A priority patent/CN104136327B/zh
Priority to US14/369,905 priority patent/US9409368B2/en
Priority to PCT/EP2013/052928 priority patent/WO2013124200A1/en
Publication of EP2631188A1 publication Critical patent/EP2631188A1/de
Application granted granted Critical
Publication of EP2631188B1 publication Critical patent/EP2631188B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/262—Folding sheets, blanks or webs involving folding, leading, or trailing flaps of blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/20—Applying or generating heat or pressure or combinations thereof by fluid pressure acting directly on folds or on opposed surfaces, e.g. using hot-air jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
    • B29C65/103—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined direct heating both surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7879—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined said parts to be joined moving in a closed path, e.g. a rectangular path
    • B29C65/7882—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined said parts to be joined moving in a closed path, e.g. a rectangular path said parts to be joined moving in a circular path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72321—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72327—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7234—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7234—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer
    • B29C66/72341—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer for gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7162—Boxes, cartons, cases
    • B29L2031/7166—Cartons of the fruit juice or milk type, i.e. containers of polygonal cross sections formed by folding blanks into a tubular body with end-closing or contents-supporting elements, e.g. gable type containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/24—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for shaping or reshaping completed packages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/20—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by folding-down preformed flaps

Definitions

  • the present invention relates to a folding unit for producing folded packages of pourable food products from relative sealed packs.
  • Tetra Brik Aseptic registered trademark
  • a typical example of this type of package is the parallelepiped-shaped package for liquid or pourable food products known as Tetra Brik Aseptic (registered trademark), which is made by folding and sealing laminated strip packaging material.
  • the packaging material has a multilayer structure substantially comprising a base layer for stiffness and strength, which may comprise a layer of fibrous material, e.g. paper, or of mineral-filled polypropylene material; and a number of layers of heat-seal plastic material, e.g. polyethylene film, covering both sides of the base layer.
  • a base layer for stiffness and strength may comprise a layer of fibrous material, e.g. paper, or of mineral-filled polypropylene material; and a number of layers of heat-seal plastic material, e.g. polyethylene film, covering both sides of the base layer.
  • the packaging material may also comprise a layer of gas- and light-barrier material, e.g. an aluminium foil or an ethyl vinyl alcohol (EVOH) foil, which is superimposed on a layer of heat-seal plastic material, and is in turn covered with another layer of heat-seal plastic material forming the inner face of the package eventually contacting the food product.
  • gas- and light-barrier material e.g. an aluminium foil or an ethyl vinyl alcohol (EVOH) foil
  • packages of this sort are produced on fully automatic packaging machines, on which a continuous tube is formed from the web-fed packaging material.
  • the web of packaging material is sterilized on the packaging machine, e.g. by applying a chemical sterilizing agent, such as a hydrogen peroxide solution, which, once sterilization is completed, is removed from the surfaces of the packaging material, e.g. evaporated by heating.
  • a chemical sterilizing agent such as a hydrogen peroxide solution
  • the tube is filled continuously downwards with the sterilized or sterile-processed food product, and is sealed and then cut along equally spaced cross sections to form pillow packs, which may be fed to a folding unit to form the finished packages.
  • the pillow packs substantially comprise a main portion, and opposite top and bottom end portions tapering from the main portions towards respective top and bottom sealing bands which extends substantially orthogonal to the axis of the pack.
  • each end portion is defined by a pair of respective trapezoidal walls which extend between main portion of the pack and the relative sealing band.
  • Each pillow pack also comprises, for each top and bottom end portion, an elongated substantially rectangular fin formed by respective sealing band; and a pair of substantially triangular flaps projecting from opposite sides of relative end portion and defined by end portions of respective trapezoidal walls and by corresponding triangular portions which project from the main portion.
  • the end portions are pressed towards each other by the folding unit to form flat opposite end walls of the pack, while at the same time folding the flaps of the top portion onto respective lateral walls of the main portion and the flaps of the bottom portion onto the bottom sealing band.
  • Packaging machines for producing packages of the above type are known, typically comprising:
  • Folding units are known, for example from EP-A-0887261 in the name of the same Applicant, which substantially comprise:
  • the first folding means comprise a fixed guide member, which is positioned facing and at a distance from a conveying portion of the chain, and converge towards this conveying portion.
  • the fixed guide member cooperates with bottom end portion of each pack to press it down flat towards the chain.
  • the second folding means comprise a pair of contrast elements defined by parallel elongated sections fitted to a fixed frame adjacent to respective opposite lateral edges of the chain conveyor. More precisely, the contrast elements cooperate in sliding manner with the top end portion of each pack to fold the top fin towards the main portion of the relative pack, and top flaps onto this main portion.
  • top fins are folded onto the flattened main portion on the opposite side of a longitudinal sealing band.
  • a folding unit for producing folded packages of pourable food products from relative sealed packs, as claimed in claim 1.
  • Number 1 in Figure 1 indicates as a whole a folding unit for a packaging machine (not shown) for continuously producing sealed packages 2 of a pourable food product, such as pasteurized or UHT milk, fruit juice, wine, etc., from a known tube of packaging material (not shown).
  • a packaging machine not shown
  • sealed packages 2 of a pourable food product such as pasteurized or UHT milk, fruit juice, wine, etc.
  • the tube is formed in known manner upstream from unit 1 by longitudinally folding and sealing a known web (not shown) of heat-seal sheet material which may comprise a base layer for stiffness and strength, which may be formed by a layer of fibrous material, e.g. paper, or of mineral-filled polypropylene material, and a number of layers of heat-seal plastic material, e.g. polyethylene film, covering both sides of the base layer.
  • the packaging material may also comprises a layer of gas-and light-barrier material, e.g.
  • an aluminium foil or an ethyl vinyl alcohol (EVOH) foil which is superimposed on a layer of heat-seal plastic material, and is in turn covered with another layer of heat-seal plastic material forming the inner face of the package 2 eventually contacting the food product.
  • EVOH ethyl vinyl alcohol
  • the tube of packaging material is then filled with the food product, and is sealed and cut along equally spaced cross sections to form a number of pillow packs 3 ( Figure 18 ), which are then transferred to unit 1 where they are folded mechanically to form respective parallelepiped-shaped packages 2.
  • the packaging material may be cut into blanks, which are formed into packages 2 with forming spindles, and packages 2 are filled with the food product and sealed.
  • packages 2 are filled with the food product and sealed.
  • Tetra Rex registered trademark
  • unit 1 receives pillow packs 3 from an in-feed conveyor 41 and feeds folded package 2 to out-feed conveyor 42 ( Figure 1 ).
  • a pack 3 which has a longitudinal sealing band 4, formed to produce the tube of packaging material from the web folded into a cylinder, extends along one side of each pack 3, which is closed at the opposite ends by respective transverse sealing bands 5, 6 perpendicular to and joined to longitudinal sealing band 4.
  • Each pack 3 has an axis A, and comprises a main body 7 and opposite, respectively top and bottom, end portions 8, 9 tapering from main body 7 towards respective transverse sealing bands 5, 6.
  • Main body 7 of each pack 3 is bounded laterally by two lateral walls 10a and two lateral walls 10b which are alternate to each other.
  • Each end portion 8, 9 is defined by two walls 12, each substantially in the form of an isosceles trapezium, which slope slightly towards each other with respect to a plane perpendicular to axis A, and have minor edges defined by respective top and bottom end edges of respective wall 10a, and major edges joined to each other by respective sealing bands 5, 6.
  • Longitudinal sealing band 4 extends between transverse sealing bands 5 and 6, and along the whole of one wall 10a and the corresponding walls 12 on the same side as wall 10a.
  • Each pack 3 also comprises, for each end portion 8, 9, a respective substantially elongated rectangular end fin 17, 18 formed by respective sealing bands 5, 6 and projecting in the direction of axis A from relative pack 3; and two substantially triangular flaps 19, 20 projecting laterally on opposite sides of main body 7, and defined by end portions of relative walls 12 and by corresponding triangular end portions of lateral walls 10b.
  • each end fin 17, 18 extends along a direction orthogonal to axis A.
  • unit 1 presses end portions 8, 9 of relative pack 3 down flat towards each other, and at the same time folds respective fins 17, 18 onto flattened end portions 8, 9.
  • fin 18 is folded onto end portion 9 on the opposite side of sealing band 4.
  • unit 1 folds flaps 20 onto top ends of respective walls 10b towards end portion 8 and folds flaps 19 onto previously folded fin 17, on the opposite side of end portion 9.
  • unit 1 substantially comprises:
  • wall 10a with longitudinal sealing band 4 is arranged downstream of wall 10a without longitudinal sealing band 4.
  • Heating device 27 is, in particular, arranged between folding means 23 and pressure device 28 along forming path B.
  • conveyor 34 basically comprises an endless transport element, in the example shown a chain 60, formed by a plurality of mutually hinged rigid modules or links 35 and looped about a pair of coaxial driving sprockets 26 and a cam 25.
  • Chain 60 comprises a straight horizontal top branch 30, a bottom branch 31 substantially parallel to branch 30, and two curved C-shaped portions 32, 33, which are positioned with their concavities facing each other and connect branches 30 and 31; more specifically, C-shaped portion 32 cooperates with driving sprockets 26, whilst C-shaped portion 33 cooperates with cam 25.
  • Each link 35 comprises a substantially flat plate 36 adapted to receive a relative pack 3, and a paddle 43, which projects perpendicularly from plate 36 on the opposite side of driving sprockets 26 and cam 25 and which cooperates with and pushes a corresponding wall 10a of a relative pack 3 to feed it along path B.
  • paddle 43 of each link 35 cooperates with wall 10a without longitudinal sealing band 4.
  • Cam 25 is described in more detail in the European application “Folding unit for producing folded packages of pourable food products from relative sealed packs", filed by the Applicant with the application number EP11187351.9 .
  • Unit 1 comprises ( Figures 5 and 9 to 14 ) a plurality of pairs of shells 50 which are integrally movable along path B and are movable along a direction C transversal to path B; shells 50 of each pair may be arranged in:
  • shells 50 may be arranged also in a closed position, in which they grip folded package 2 but substantially do not exert any pressure thereon.
  • station 21 is defined by C-shaped portion 32 and station 22 is defined by bottom branch 31 in a position closer to C-shaped portion 32 than to C-shaped portion 33.
  • Path B comprises ( Figure 2 ), proceeding from station 21 to station 22,:
  • stretch P1 is defined by a part of C-shaped portion 32 and stretch P2 is defined by top branch 30 of chain 60.
  • Portion Q is defined by C-shaped portion 33, and portion R is defined by part of bottom branch 31 of chain 60.
  • Folding means 23 cooperate cyclically with each pack 3 along portion P.
  • Folding means 24 are defined by links 35 and, therefore, move together with chain 60 along path B.
  • folding means 24 flatten end portion 9, folds relative fin 18 onto portion 9 and bend flaps 20 towards axis A and end portion 8, as relative pack 2 is carried along stretch P1 of portion P ( Figures 8 and 9 ).
  • Heating device 27 acts on bent flaps 19, 20 to melt the external layer of the packaging material of flaps 19, 20 before they are pressed and sealed against end portion 8 and top ends of relative walls 10b respectively, as pack 2 is carried along stretch P2 of portion P ( Figure 9 ).
  • shells 50 of each pair cyclically move according to the following work cycle.
  • Shells 50 of each pair are arranged in the open position at station 21, move from the open position to the fully closed position along stretch P1 and an initial part of stretch P2, and reach the fully closed position along a remaining part of stretch P2. In the embodiment shown, shells 50 reach the fully closed position downstream from heating device 27 and upstream from pressing device 28, proceeding according to the advancing direction of chain 60.
  • shells 50 of each link 35 perform two functions:
  • shells 50 of each pair move from the fully closed position into the closed position at the beginning of portion Q.
  • shells 50 integrally move parallel to direction C and relative to respective paddle 43 ( Figure 6 ).
  • shells 50 move away relative to each other for a distance, for example, of 2-4 mm, when they move from the fully closed to the closed position.
  • Link 35 comprises ( Figures 10 to 14 ):
  • plate 36 is arranged below, and then supports, pack 3 (or package 2) along portion P and a starting stretch of portion Q of forming path B.
  • plate 36 is arranged above package 2 along portion R of forming path B. Accordingly, folded package 2 is released, under the gravity action at station 22, to conveyor 42.
  • Shells 50 define, on their sides opposite to arm 51, relative surfaces 52 which are adapted to cooperate with pack 3 and which face each other.
  • Surfaces 52 are flat, so as to control the final shape of packages 2.
  • Each arm 51 comprises, on its end opposite to relative shell 50, a roller 55.
  • Each slide 53 is arranged between relative shell 50 and roller 55 of relative arm 51. Furthermore, each slide 53 may slide parallel to direction C relative to guide 54.
  • each arm 51 is integral with relative shell 50.
  • Paddles 43 are flat.
  • folding means 24 comprise, for each pair of links 35a, 35b consecutive to each other:
  • upstream link 35a and “downstream link 35b” indicates a pair of consecutive links 35 which are arranged respectively upstream and downstream with reference to the advancing direction of chain 60 along path B ( Figure 3 ).
  • each link 35 comprises, with reference to the advancing direction of chain 60 along path P,:
  • each link 35 comprises a slide 72 which is arranged upstream of slot 40, proceeding according the advancing direction of link 35 along path B.
  • Plate 36 of each link 35a, 35b comprises ( Figures 2 and 3 ):
  • Body 142 defines slot 40 together with portion 140.
  • slot 40 extends orthogonal to the plane in which path B lies.
  • body 142 comprises ( Figure 16 ):
  • Bridge 144 comprises, in turn,:
  • Arms 145 and relative plates 143 define corresponding grooves 147 tangential to path B.
  • Grooves 147 are open on relative sides which are opposite to relative plates 143. In other words, the open sides of grooves 147 face each other.
  • arm 146 supports end portion 9 of pack 3 being folded while fin 18 is housed with room inside slot 40.
  • Arms 145 comprise, on opposite side to plate 143, relative recesses 148 which are open on the opposite side to plate 36.
  • Recesses 148 laterally delimit slot 40 and are adapted to cooperate with opposite respective lateral ends of fin 18.
  • Slide 72 comprises, starting from portion 140 of downstream link 35b towards upstream link 35a, ( Figures 7 and 9 to 15 ),:
  • plate 162 protrudes from plate 36 on the opposite side of body 142.
  • Folding means 37 also comprise a pair of raising element 170 ( Figures 8 and 17 ) having respective ends 171 interacting with flaps 20, as relative packs 3 move along stretch P2 of path B.
  • element 170 are shaped as cylinders.
  • Elements 170 are stationary relative to path B, and are, in the embodiment shown, fitted to frame 29.
  • slide 72 is arranged in the second position at station 21, moves from the second to the first position along curved stretch P1 of path B, remains in the first position along straight stretch P2 of path B, moves from the first position to the second position along curved portion Q of path B, and remains in the second position along straight portion R of path B and from station 22 to station 21.
  • the movement of slide 72 from the second position to the first position along curved stretch P1 is due to the fact, that the angular distances between consecutive links 35a, 35b decreases, as these links 35a, 35b move along curved stretch P1 in the advancing direction of chain 60.
  • fin 18 of pack 3 is arranged within open slot 40 of link 35 at station 21
  • slide 72 is carried by downstream link 35b, slot 40 is carried by upstream link 35a and longitudinal sealing band 4 is formed on wall 10a which is arranged downstream proceeding according to the advancing sense of link 35 along path B, slide 72 folds fin 18 onto end portion 9 towards upstream link 35a. Accordingly, slide 72 folds fin 18 on the opposite side of longitudinal sealing band 4.
  • ends 171 raise flaps 20 towards end portion 8 and bend flaps 20 relative to axis A, up to when they reach the position shown in Figure 8 .
  • the corresponding shells 50 as moving from the open to the fully closed position, press flaps 20 against top ends of relative walls 10b, downstream from folding means 23 and heating device 17, proceeding according to the advancing direction of chain 60.
  • Unit 1 also comprises a pair of cams 61 ( Figures 4 and 5 ) adapted to control the movement of each pair of shells 50 between relative fully closed position, closed position and open position, as each pair of shells 50 advances along path B.
  • cams 61 Figures 4 and 5
  • cams 61 also control the movement of each pair of shells 50 integrally to each other along direction C and relative to paddle 43 of corresponding link 35.
  • cams 61 are arranged on opposite lateral sides of chain 60.
  • One cam 61 comprises a groove 62 which is engaged by rollers 55 of first shells 50.
  • the other cam 61 comprises a further groove 62 which is engaged by rollers 55 of second shells 50.
  • grooves 62 comprise, proceeding from station 21 to station 22,:
  • Folding means 23 comprise a guide member 45 fitted in a fixed position between station 21 and heating device 27 ( Figure 1 ).
  • Guide member 45 defines a contrast surface 46 converging towards chain 60 and cooperating in a sliding manner with end portion 8 of each pack 3 to compress and flatten end portion 8 towards chain 60.
  • Frame 29 also comprises a pair of fixed sides 68 (only one shown in Figure 1 ) for laterally containing packs 3 along path B, located on opposite sides of chain 60, and extending between station 21 and heating device 27.
  • Heating device 27 comprises ( Figures 1 , 8 and 9 ) :
  • Pressure device 28 comprises ( Figure 1 ) a belt 80 wound onto a drive wheel 81 and a driven wheel 82.
  • Belt 80 comprises, on its outer surface opposite to wheels 81, 82, a plurality of projections 83 which are adapted to press flaps 19 of each pack 3 onto relative fin 17.
  • each package 2 in formation is controlled, downstream from heating device 27, within a compartment bounded by:
  • unit 1 Operation of unit 1 will be described with reference to one pack 3 and to relative link 35a (35b) as of an initial instant, in which pack 3 is fed from the in-feed conveyor 41 to chain 60 at station 21 of path B.
  • link 35a (35b) is moving at the beginning of stretch P1 and therefore slot 40 is open. Furthermore, shells 50 are arranged in the open position.
  • pack 3 is positioned with end fin 18 facing plate 72 of link 35, and slides on one wall 10a along relative paddle 43, so that fin 18 is parallel to paddle 43, until when fin 18 enters open slot 40.
  • pack 3 is arranged above and, therefore, supported by arm 145 of body 142 carried by link 35a (35b).
  • paddle 43 cooperates with wall 10a opposite to sealing band 4 of pack 3.
  • contrast surface 46 cooperates in a sliding manner with end portion 8 of pack 3.
  • portions 8 and 9 are flattened towards each other, fin 17 is folded onto flattened portion 8 and flaps 20 are bent relative to portion 8 towards axis A and on the opposite side of portion 8, as shown in Figure 9 .
  • fin 18 is housed with room inside slot 40.
  • each pair of consecutive links 35a, 35b moves towards each other along stretch P1. In this way, the angle between consecutive links 35a, 35b decreases along stretch P1.
  • lever 160 rotates about portion 140 of downstream link 35a, and plate 162 moves towards slot 40 of upstream link 35a while pins 161 slide inside relative grooves 147 of body 142 of upstream link 35a.
  • plate 72 of the link 35a is the first position in which it engages slot 40.
  • fin 18 is folded onto end portion 9.
  • fin 18 is folded on the opposite side of sealing band 4, i.e. towards wall 10a arranged upstream with reference to the advancing direction of chain 60.
  • fixed raising elements 170 raise flaps 20 towards end portion 8 and bend flaps 20 relative to axis A, as shown in Figures 8 and 9 .
  • nozzles 70, 71 direct air onto flaps 19, 20 of pack 3, to partly and locally melt the packaging material of flaps 19, 20 ( Figure 9 ) and of the portion of main portion 7 facing flaps 19, 20.
  • shells 50 contact walls 10b of packs 3, and press flaps 20 onto relative top ends of walls 10b as flaps 20 cool. In this condition, shells 50 are arranged in the fully closed position.
  • pack 3 is arranged below belt 80 and projections 83 press flaps 20 onto portion 9, as flaps 20 cool.
  • the volume of folded package 2 is controlled by two paddles 43 of respective consecutive links 35a, 35b by shells 50 arranged in the fully closed position, and by projections 83 of belt 80.
  • Folded package 2 then move along portion Q of path B.
  • shells 50 move relative to each other from the fully closed position to the closed position, in which they grip package 2 but substantially do not exert any pressure thereon.
  • shells 50 move together with package 2 relative to paddle 43 parallel to direction C, along portion Q.
  • shells 50 together with folded package 2 are staggered from paddle 43, at the end of portion Q, so as to be releasable by link 35 without interference with paddle 43 ( Figure 10 ).
  • package 2 engages a rotating device 100 shown in Figures 7 , 10 , 11 , 12 and 13 .
  • each pair of consecutive links 35a, 35b move away from each other, as shown in Figure 1 .
  • plate 72 of downstream link 35b moves back from the first to the second position, in which it leaves free slot 40 of upstream link 35a.
  • folded package 2 is arranged below plate 36 and is supported by the shells 50 arranged in the closed position.
  • paddle 43 does not interfere with the release of package 2.
  • shells 50 are conveyed by chain 60 towards station 21.
  • unit 1 folds whole fin 18 of each pack 3 on end portion 9, by moving plate 72 of downstream link 35a from the second position to the first position in which it engages slot 40 of upstream link 35a.
  • the bending of the fin 18 is particularly precise and highly repeatable, when compared with the known solution which are described in the introductory part of the present description.
  • the overall quality of the folding is particularly high as well as the overall final aspect of packages 2.
  • Unit 1 could comprise only one cam 61.
  • Unit 1 could form package 2 having a round or polygonal cross-section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Closing Of Containers (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP12157008.9A 2012-02-24 2012-02-24 Falteinheit für Maschinen zur Verpackung gießbarer Lebensmittel Active EP2631188B1 (de)

Priority Applications (10)

Application Number Priority Date Filing Date Title
ES12157008.9T ES2503616T3 (es) 2012-02-24 2012-02-24 Unidad de plegado para máquinas de envasado de productos alimenticios que se pueden verter
EP12157008.9A EP2631188B1 (de) 2012-02-24 2012-02-24 Falteinheit für Maschinen zur Verpackung gießbarer Lebensmittel
BR112014018112A BR112014018112A8 (pt) 2012-02-24 2013-02-14 Unidade de dobramento para produzir embalagens
MX2014008989A MX353517B (es) 2012-02-24 2013-02-14 Unidad de doblado para máquinas de empaque de producto alimenticio vertible.
KR1020147026075A KR101888723B1 (ko) 2012-02-24 2013-02-14 쏟을 수 있는 식품 생산 포장 머신을 위한 접는 유닛
RU2014138510A RU2617339C2 (ru) 2012-02-24 2013-02-14 Фальцовочный узел для упаковочных машин текучих пищевых продуктов
JP2014558067A JP6143017B2 (ja) 2012-02-24 2013-02-14 注入可能食品包装装置のための折り畳みユニット
CN201380010624.5A CN104136327B (zh) 2012-02-24 2013-02-14 用于可倾倒食品包装机的折叠单元
US14/369,905 US9409368B2 (en) 2012-02-24 2013-02-14 Folding unit for pourable food product packaging machines
PCT/EP2013/052928 WO2013124200A1 (en) 2012-02-24 2013-02-14 Folding unit for pourable food product packaging machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12157008.9A EP2631188B1 (de) 2012-02-24 2012-02-24 Falteinheit für Maschinen zur Verpackung gießbarer Lebensmittel

Publications (2)

Publication Number Publication Date
EP2631188A1 true EP2631188A1 (de) 2013-08-28
EP2631188B1 EP2631188B1 (de) 2014-07-23

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Country Status (10)

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US (1) US9409368B2 (de)
EP (1) EP2631188B1 (de)
JP (1) JP6143017B2 (de)
KR (1) KR101888723B1 (de)
CN (1) CN104136327B (de)
BR (1) BR112014018112A8 (de)
ES (1) ES2503616T3 (de)
MX (1) MX353517B (de)
RU (1) RU2617339C2 (de)
WO (1) WO2013124200A1 (de)

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EP2923959A1 (de) * 2014-03-25 2015-09-30 Tetra Laval Holdings & Finance S.A. Falteinheit zur Herstellung von Verpackungen für Lebensmittelprodukte, die aus versiegelten Verpackungen in ein Tubenverpackungsmaterial gegossen werden können
EP3020642A1 (de) * 2014-11-11 2016-05-18 Tetra Laval Holdings & Finance S.A. Falteinheit zur Herstellung gefalteter Verpackungen aus versiegelten Verpackungen
EP3219632A1 (de) * 2016-03-17 2017-09-20 Tetra Laval Holdings & Finance S.A. Falteinheit und verfahren zur herstellung von verpackungen aus versiegelten packs
EP3566958A1 (de) * 2018-05-11 2019-11-13 Tetra Laval Holdings & Finance S.A. Falteinheit und verpackungsanordnung mit einer falteinheit

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ES2484698T3 (es) * 2011-10-31 2014-08-12 Tetra Laval Holdings & Finance S.A. Unidad de plegado para producir envases plegados de productos alimenticios vertibles a partir de envases sellados correspondientes
ES2535810T3 (es) * 2011-10-31 2015-05-18 Tetra Laval Holdings & Finance S.A. Unidad de plegado y método para producir envases de productos alimenticios que se pueden verter
EP2586716B1 (de) * 2011-10-31 2014-08-06 Tetra Laval Holdings & Finance S.A. Falteinheit für Maschinen zur Verpackung gießbarer Lebensmittel
DE102013107223B4 (de) * 2013-07-09 2017-12-07 Sig Technology Ag Vorrichtung und Verfahren zum Auffalten, Befüllen und Verschließen von Packungsmänteln
CN108438384B (zh) * 2014-01-21 2020-04-10 朱双海 一种折叠包装件端部折片的方法
ES2856251T3 (es) * 2014-05-19 2021-09-27 Primapak Llc Aparato y método para fabricar un envase flexible
DE102016109980A1 (de) * 2016-04-04 2017-10-05 Sig Technology Ag Vorrichtung und Verfahren zum Formen der Giebelflächen von Verpackungen mit schrägem Giebel
JP7346456B2 (ja) * 2018-05-11 2023-09-19 テトラ ラバル ホールディングス アンド ファイナンス エス エイ 包装アセンブリ用の送出装置、及び送出装置を含む包装アセンブリ
CN110562557B (zh) * 2019-10-16 2024-08-27 山东碧海机械科技有限公司 一种无菌灌装机的高速后成型系统

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EP2923959A1 (de) * 2014-03-25 2015-09-30 Tetra Laval Holdings & Finance S.A. Falteinheit zur Herstellung von Verpackungen für Lebensmittelprodukte, die aus versiegelten Verpackungen in ein Tubenverpackungsmaterial gegossen werden können
WO2015144363A1 (en) * 2014-03-25 2015-10-01 Tetra Laval Holdings & Finance S.A. Folding unit for producing packages of food products pourable into a tube of packaging material from sealed packs
CN106414250A (zh) * 2014-03-25 2017-02-15 利乐拉瓦尔集团及财务有限公司 用于从密封包生产可灌注到包装材料管中的食物产品的包装件的折叠单元
JP2017508678A (ja) * 2014-03-25 2017-03-30 テトラ・ラヴァル・ホールディングス・アンド・ファイナンス・ソシエテ・アノニムＴｅｔｒａ Ｌａｖａｌ Ｈｏｌｄｉｎｇｓ ＆ Ｆｉｎａｎｃｅ Ｓ．Ａ． シールされたパックから包装材料のチューブ内へ注ぎ込み可能な食品のパッケージを製造するための折り曲げユニット
CN106414250B (zh) * 2014-03-25 2018-07-20 利乐拉瓦尔集团及财务有限公司 用于从密封包生产可灌注到包装材料管中的食物产品的包装件的折叠单元
US10392137B2 (en) 2014-03-25 2019-08-27 Tetra Laval Holdings & Finance S.A. Folding unit for producing packages of food products pourable into a tube of packaging material from sealed packs
EP3020642A1 (de) * 2014-11-11 2016-05-18 Tetra Laval Holdings & Finance S.A. Falteinheit zur Herstellung gefalteter Verpackungen aus versiegelten Verpackungen
WO2016074921A1 (en) * 2014-11-11 2016-05-19 Tetra Laval Holdings & Finance S.A. Folding unit for producing folded packages from sealed packs
EP3219632A1 (de) * 2016-03-17 2017-09-20 Tetra Laval Holdings & Finance S.A. Falteinheit und verfahren zur herstellung von verpackungen aus versiegelten packs
WO2017157700A1 (en) * 2016-03-17 2017-09-21 Tetra Laval Holdings & Finance S.A. Folding unit for producing packages from sealed packs and method for producing packages form sealed packs
US10472109B2 (en) 2016-03-17 2019-11-12 Tetra Laval Holdings & Finance S.A. Folding unit for producing packages from sealed packs and method for producing packages form sealed packs
EP3566958A1 (de) * 2018-05-11 2019-11-13 Tetra Laval Holdings & Finance S.A. Falteinheit und verpackungsanordnung mit einer falteinheit

Also Published As

Publication number Publication date
BR112014018112A8 (pt) 2017-07-11
CN104136327A (zh) 2014-11-05
RU2014138510A (ru) 2016-04-10
US9409368B2 (en) 2016-08-09
JP2015508045A (ja) 2015-03-16
RU2617339C2 (ru) 2017-04-24
JP6143017B2 (ja) 2017-06-07
CN104136327B (zh) 2016-08-24
WO2013124200A1 (en) 2013-08-29
ES2503616T3 (es) 2014-10-07
MX2014008989A (es) 2014-09-08
KR101888723B1 (ko) 2018-09-20
KR20140135992A (ko) 2014-11-27
US20140371046A1 (en) 2014-12-18
EP2631188B1 (de) 2014-07-23
BR112014018112A2 (de) 2017-06-20
MX353517B (es) 2018-01-17

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